user
List the main ideas of this text.

Grocery stores and supermarkets offer a wide variety of food products to people in the US, from warehouse stores to convenience stores to farmers markets to specialty stores.


assistant
The main ideas of this text are: 
1. Grocery stores and supermarkets offer a wide variety of food products in the US. 
2. Different types of stores are available in the US, such as warehouse stores, convenience stores, farmers markets, and specialty stores.